Closed-form solutions for robust acoustic sensor localization

Author

Haddad, Diego B. ; Nunes, Leonardo O. ; Martins, Wallace A. ; Biscainho, Luiz W. P. ; Bowon Lee

Author_Institution

Univ. Fed. do Rio de Janeiro, Rio de Janeiro, Brazil

fYear

2013

fDate

20-23 Oct. 2013

Firstpage

1

Lastpage

4

Abstract

This paper deals with the localization of acoustic sensors based on signals emitted by loudspeakers at known positions. In particular, a model for distortions in time-of-flight (TOF) estimates applicable to the sensor localization problem is presented along with closed-form solutions with low computational cost. The proposed techniques are able to approximate the sensor position even when the TOFs are corrupted by an unknown delay, there is a sampling frequency mismatch between the A/D and D/A converters associated with sensor and loudspeakers, and the speed of sound is unknown. Simulations and an experiment on real data demonstrate that the proposed methods are able to estimate sensor positions with less than 2 cm of error in the evaluated scenarios.

Keywords

acoustic signal processing; optimisation; A/D converters; D/A converters; TOA estimation; closed-form solutions; robust acoustic sensor localization problem; sampling frequency mis- match; time-of-flight estimation; Conferences; Delays; Loudspeakers; Mathematical model; Microphones; Signal processing; Vectors; Acoustic sensor localization; clock skew; least-squares; time-difference-of-flight; time-of-flight;

fLanguage

English

Publisher

ieee

Conference_Titel

Applications of Signal Processing to Audio and Acoustics (WASPAA), 2013 IEEE Workshop on

Conference_Location

New Paltz, NY

ISSN

1931-1168

Type

conf

DOI

10.1109/WASPAA.2013.6701810

Filename

6701810